title: Selective IgG deficiency (a case report).
mesh_terms: D000293:Adolescent; D004406:Dysgammaglobulinemia / Q000150:complications / Q000276:immunology*; D005500:Follow-Up Studies; D006801:Humans; D017099:IgG Deficiency; D007109:Immunity; D017053:Infection Control; D008297:Male